Mineral content of three insect (pulse beetle, Callosobruchus chinensis L.)
infested legumes viz. chick pea, mung pea and pigeon pea stored for six mo
nths and treated with three edible oils viz. groundnut, mustard and coconut
oil has been studied. With increase in storage period significant increase
in calcium, phosphorus and iron content of untreated legumes was observed.
After three months of storage slight increase in three minerals was observ
ed in the legumes treated with coconut oil which continued till the end of
sixth months as compared to other two oil treated counterparts. The storage
period was associated with insect infestation which in turn influenced the
mineral content of legumes. Ground nut and mustard oils were able to prote
ct legumes for six months against insect infestation when applied in small
amounts (0.5%). Whereas coconut oil had protective effect against insect in
festation for four months only.